Highly anisotropic thermal conductivity of mesogenic epoxy resin film through orientation control

Ning Tang, Shingo Tanaka, Yoshitaka Takezawa, Kiyoshi Kanie

Research output: Contribution to journalArticlepeer-review

Abstract

To develop insulating materials with a high thermally conductive anisotropy, planarly aligned mesogenic epoxy (ME) resin film was fabricated by uniaxial coating on a hydrophobic polyethylene terephthalate substrate. Grazing incidence small-angle X-ray scattering (GISAXS) and transmission SAXS measurements exhibited that the films spontaneously formed uniaxially aligned monodomain-like smectic structures by curing on the hydrophobic substrate. Then, an in- and out-of-plane thermal conductivity of 10 and 0.048 W m−1 K−1 and outstanding thermal conductivity anisotropy of 208 have been confirmed, respectively. The ME resin films with high thermal conductivity can be applied as insulating materials for multiple-layer electrical and electronic devices.

Original languageEnglish
Article number51396
JournalJournal of Applied Polymer Science
Volume138
Issue number47
DOIs
Publication statusPublished - 2021 Dec 15

Keywords

  • applications
  • conducting polymers
  • films
  • liquid crystals

ASJC Scopus subject areas

  • Chemistry(all)
  • Surfaces, Coatings and Films
  • Polymers and Plastics
  • Materials Chemistry

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